Even baking and browning. No burning. Will not rust. Made of two sheets of aluminum- the bottom sheet blocks the direct oven heat while the layer of air acts as an insulator preventing the top sheet from overheating.

Even baking and browning. No burning. Will not rust. Made of two sheets of aluminum- the bottom sheet blocks the direct oven heat while the layer of air acts as an insulator preventing the top sheet from overheating.